I've borrowed a couple of guns in 357 sig & I think I want one. Only problem is, I'd hate to buy a caliber to later see it go the way of the 10mm, 38 super, and 45 super. What do you guys think, is the 357 sig a viable caliber worth investing in? By the way, 2 years ago, I trimmed my pistol calibers & sold off my 10mm's, 40's and 38 super. I really don't want to go through that again.